महाभारतः mahābhārataḥ - book-7, chapter-161, verse-51

तथा संसक्तयुद्धं तदभवद्भृशदारुणम् ।
अथ संध्यागतः सूर्यः क्षणेन समपद्यत ॥५१॥

51. tathā saṁsaktayuddhaṁ tadabhavadbhṛśadāruṇam ,
atha saṁdhyāgataḥ sūryaḥ kṣaṇena samapadyata.

51. tathā saṃsaktayuddham tat abhavat bhṛśadāruṇam
atha sandhyāgataḥ sūryaḥ kṣaṇena samapadyata

51. tathā tat saṃsaktayuddham bhṛśadāruṇam abhavat
atha sūryaḥ kṣaṇena sandhyāgataḥ samapadyata

51. Thus, that joined battle became exceedingly terrible. Then, in an instant, the sun reached its twilight setting.

Words meanings summery:

• तथा (tathā) - thus, so, in that manner

• संसक्तयुद्धम् (saṁsaktayuddham) - joined battle, continuous battle

• तत् (tat) - that battle (that, it)

• अभवत् (abhavat) - it became, it happened

• भृशदारुणम् (bhṛśadāruṇam) - extremely terrible/fierce

• अथ (atha) - then, thereupon, now

• सन्ध्यागतः (sandhyāgataḥ) - approached twilight, reached evening

• सूर्यः (sūryaḥ) - the sun

• क्षणेन (kṣaṇena) - in an instant, quickly, by a moment

• समपद्यत (samapadyata) - it became, it occurred, it attained

Words meanings and morphology

तथा (tathā) - thus, so, in that manner

(indeclinable)

संसक्तयुद्धम् (saṁsaktayuddham) - joined battle, continuous battle

(noun)

Nominative, neuter, singular of saṃsaktayuddha

saṁsaktayuddha - joined battle, continuous battle

Compound type : tatpuruṣa (saṃsakta+yuddha)

• saṃsakta – joined, attached, connected
  participle (masculine)
  Past Passive Participle
  Prefix: sam
  Root: sañj (class 1)
• yuddha – battle, fight, war
  noun (neuter)

तत् (tat) - that battle (that, it)

(pronoun)

Nominative, neuter, singular of tad

tad - that, it

अभवत् (abhavat) - it became, it happened

(verb)

3rd person , singular, active, past imperfect (laṅ) of bhū

Root: bhū (class 1)

भृशदारुणम् (bhṛśadāruṇam) - extremely terrible/fierce

(adjective)

Nominative, neuter, singular of bhṛśadāruṇa

bhṛśadāruṇa - exceedingly fierce, very terrible

Compound type : karmadhāraya (bhṛśa+dāruṇa)

• bhṛśa – much, very, exceedingly
  adjective
• dāruṇa – terrible, dreadful, fierce
  adjective (neuter)

अथ (atha) - then, thereupon, now

(indeclinable)

सन्ध्यागतः (sandhyāgataḥ) - approached twilight, reached evening

(adjective)

Nominative, masculine, singular of sandhyāgata

sandhyāgata - reached twilight, set (as the sun)

Compound type : tatpuruṣa (sandhyā+gata)

• sandhyā – twilight, evening, junction of day and night
  noun (feminine)
• gata – gone, arrived, reached
  participle (masculine)
  Past Passive Participle
  Root: gam (class 1)

सूर्यः (sūryaḥ) - the sun

(noun)

Nominative, masculine, singular of sūrya

sūrya - sun, the sun god

क्षणेन (kṣaṇena) - in an instant, quickly, by a moment

(noun)

Instrumental, masculine, singular of kṣaṇa

kṣaṇa - moment, instant, short time

समपद्यत (samapadyata) - it became, it occurred, it attained

(verb)

3rd person , singular, middle, past imperfect (laṅ) of sampad

Prefix: sam

Root: pad (class 4)